While there are currently no limits on how strong marijuana gets, people are starting to take notice as THC levels in Colorado marijuana are climbing higher and higher. CNN's Ana Cabrera reports that TEQ Analytical Labs has tested a sample with THC levels at approximately 32%.

According to the National Institute on Drug Abuse, "in the early 1990s, the average THC content in confiscated cannabis samples was roughly 3.7 percent for marijuana." Relative to THC potency statistics from not so long ago, and we see that strength has gone up almost tenfold in the strongest strains. There are still strains available with lower THC content, however the trend seems to be heading higher in Colorado and beyond. 

Never miss an update! Subscribe to The Daily Marijuana Observer newsletter today!

Photo Credit: Wikimedia